If this is not demanding for the most part at first, one could start ignoring real complexity (10)
I believe the answer is:
simplistic
'ignoring real complexity' is the definition.
(I've seen this before)
'if this is not demanding for the most part at first one could start' is the wordplay.
I cannot quite see how this works, but
'is' is present in the answer.
'part' could be 'ti' (ti is a kind of part) and 'ti' is present in the answer.
'first' could be 'i' (I in Roman numerals eg Elizabeth I) and 'i' is found within the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for simplistic that I've seen before include "Ignoring real complexity" , "Naive; ignoring complexities" , "Not recognising true complexity" .)